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GrainGenes Reference Report: TAG-89-1039

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Reference	TAG-89-1039
Title	RFLP markers associated with Sr22 and recombination between chromosome 7A of bread wheat and the diploid species Triticum boeoticum
Journal	Theoretical and Applied Genetics
Year	1994
Volume	89
Pages	1039-1045
Author	Paull JG Pallotta MA Langridge P The TT
Abstract	Analysis of the bread wheat variety Schomburgk, and related lines in its pedigree, identified RFLP markers associated with the segment of chromosome 7A carrying the Sr22 gene derived from the diploid species T. boeoticum. The distribution of the RFLP markers indicated that at least 50% of 7AS and 80% of 7AL in Schomburgk is of T. boeoticum origin. Evaluation of five sets of near-isogenic lines, backcross lines in 20 different genetic backgrounds and an F2 population segregating for Sr22 demonstrated a very low level of recombination between the 7A chromosomes of T. boeoticum and T. aestivum. Several recombinants carrying Sr22 but with a much reduced segment of T. boeoticum were identified and these may prove useful in the breeding of further varieties with Sr22
Gene	Sr22 (Triticum)
Keyword	[ Hide all but 1 of 27 ] backcross bread bread wheat breeding chromatin chromosome disease resistance gene gene location genetic markers its loci marker near isogenic lines origin pedigree population progeny puccinia graminis recombination rflp rflp markers rust diseases triticum aestivum triticum boeoticum triticum monococcum wheat varieties

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